I just got new rims and tires and they seem a little funky. The steering wheel fibrates around 55 but then goes away around 60 but it doesnt do it all the time. Also when braking the pedal vibrates around 30. I'm not sure if this is due to a balancing issue or this hubcentric thing I have been hearing about. I have BSA 333 rims with 215/40/17's. I called the compang and they said the hubdiameter is 73.1mm and the stock diameter for my ls is 57.1mm I think that means I need some sort of hubring diameter but I have no clue when it comes to this kinda stuff. Any help is much apprieciated. Thanks